" I am proud to be your mother" - Beyonce's mom celebrates singer as she turns 36

It's Beyonce's 36th birthday today, and her mother Tina Knowles Lawson took to social media to celebrate the singer with a very touching message.
Sharing a photo of both of them, Tina said she is proud to be Beyonce's mom not because she's a star but because of her other virtues.